Design Of Soft Inner Bottom Shoe Last Shoe

At present, most of the last shoe of vulcanization and injection molding technology are made of soft inner bottom made of composite nonwoven material, and the sewing machine is used to sew the feet and the inner bottom without adding the stitching amount.

The sewing machine is originally a device to stitch fur. The parts of the parts are stitched and stitched, and the edges are stitched and wrinkled.

In Fujian, the sewing machine is called "pull machine", which is similar to the name of the puller.

Inside the designer, the device is called a sewing machine. There is no misunderstanding.

When the inner bottom machine is used for sewing, the feet need not be added to the suture. For the insole, there is no need to increase the stitching, but the front part also needs to receive 2 to 3mm as the bottom shoe.

For control points, though the original 6 points are easy to find, they are not ideal for the fold, so there are some changes in the connection control points now, as shown in figure 2-6-2.

 

The front-end point A and the back end point B have not changed.

The control points G1 and G2 haven't changed at all. If the last type standard, the length of B point to G1 and G2 points is the same. If the last type is not standard, G1B=G2B should be controlled, so that the wrinkles can be evenly distributed.

There is a change in the control point of the forehand. The outer Ha point is controlled by l/2AG1 length, and the Hb point in 1/2AG2 is controlled by 1/2AG2 length. This way of determining the control points can make the wrinkles shared by the front, middle, and rear segments, which is conducive to the elimination of the front wrinkles and the change of wrinkling methods.

1. finished product drawing

As shown in figure 2-6-3, the structure of the two soft insole shoe last shoes is the same, but the sole structure is different.

Figure (a) uses vulcanization process to become vulcanizing process shoe last shoe, and the periphery of shoe sole is covered with outer bar, which appears very thick.

Figure (b) uses injection molding technology to become an injection molding shoe last shoe. The sole is made by injector, which looks like adhesive shoes.

 

When sewing the last shoe, the edge of the stitch is wrinkled, which is to meet the modeling requirements of the thickness of the last head and the heel.

These creases will be covered by the outer bars of the vulcanized shoes and the bottom walls of the injection shoes.

2. structure design drawing

As shown in Fig. 2-6-4, the bottom of the upper is not sutured, and the soft inner bottom does not need to be stitched.

Sew up the rules and stitch the wrinkles evenly in each paragraph.

 

When designing sneakers, they will often encounter shoe last shoes. In order to save the die and machining, the soft inner bottom can also take the middle plate, or it can be opened in 37 or half divided into the insole, which is similar to the variant principle of the shoe sole.

See the design and board of sports shoes.